Imvelaphi yejika lohambo
Ingqikelelo yejiko lohambo yavela kwihlabathi le-IEC kwaye isetyenziselwa ukuhlela izaphuli-mthetho ezincinci (B, C, D, K kunye no-Z) ukusuka kwimigangatho ye-IEC.Umgangatho uchaza imida esezantsi kunye nephezulu yohambo, kodwa abavelisi banakho ukuguquguquka ukumisela iinkcukacha ezichanekileyo ngaphakathi kwezi zithintelo ezinokubangela ukuba iimveliso zabo zihambe.Imizobo yohambo ibonisa imimandla yokunyamezelana apho umenzi unokuseta iindawo zohambo lwe-breaker circuit.
Ijika lokuhamba le-breaker circuit
Iimpawu kunye nokusetyenziswa kwegophe ngalinye, ukusuka kowona buntununtunu ukuya kokuncinci, zezi:
Z: Uhambo nge-2 ukuya kumaxesha e-3 alinganiswe ngoku, alungele izicelo ezinobuthathaka kakhulu njengezixhobo ze-semiconductor
B: Uhambo kwi-3 ukuya ku-5 amaxesha alinganiswe ngoku
C: Uhambo kwi-5 ukuya ku-10 amaxesha alinganiswe ngoku, afanelekile kwi-inrush yangoku
K: Uhambo nge-10 ukuya kwi-14 amaxesha alinganiswe ngoku, alungele imithwalo ene-inrush yangoku ephezulu, esetyenziselwa iimoto kunye neziguquli.
D: Uhambo kwi-10 ukuya kumaxesha angama-20 alinganiswe ngoku, afanelekile ukuqala okuphezulu ngoku
Ukuphonononga "Ukuthelekiswa kwazo zonke ii-IEC Trip curves", unokubona ukuba imisinga ephezulu ibangela iihambo ezikhawulezayo.
Ikhono lokumelana ne-impulse current yingqalelo ebalulekileyo ekukhethweni kwee-curves zohambo.Imithwalo ethile, ngokukodwa ii-motor kunye ne-transformers, ifumana utshintsho olufutshane lwangoku, olubizwa ngokuba yi-impulse current, xa abafowunelwa bevaliwe.Izixhobo zokhuseleko ezikhawulezayo, ezinje nge-b-trip curves, ziyakuqaphela oku kungena njengokusilela kwaye zivule isekethe.Kwezi ntlobo zemithwalo, iijiko zohambo ezinamanqaku ohambo lwemagnethi aphezulu (D okanye K) “zinokudlula” kwisantya sangoku esingena ngoko nangoko, zikhusela isekethe kuhambo olungeyonyani.